Beginner Gardening: Help quick help plants problems for biginner , 3 by Khaoula

Khaoula wrote:
The Dieffenbachia if the name is right we when moving here from the stor to home some leafs have benn broken but 2 of the others are today yellow and I\'m freaking out I\'m the one who change them from the old pots and this plant have the roots on top of the pot i don\'t know why and how much time it have to take to replace the roots to the new pots because i removed the dieffenbachia she wasn\'t good and i found her still in the same position of the old pot